using System;
using System.Threading.Tasks;
using UnityEngine;
using UnityEngine.XR.ARSubsystems;

public class ProgramPresenter
{
    private ProgramModel model;
    private IProgramView view;
    private TCPView tcpView;
    private RobotController controlledRobot;
    private string _programId;
    private bool lastKnownMotorState = false;

    public ProgramPresenter(ProgramModel model, IProgramView view, TCPView tcpView)
    {
        this.model = model;
        this.view = view;
        this.tcpView = tcpView;

        this.view.OnCreateProgramClicked += async (id) => await HandleCreateProgram(id);
        this.view.OnLoadProgramListRequested += HandleLoadProgramList;
        this.view.OnProgramSelectedToLoad += HandleProgramSelected;
        this.view.OnOpenProgramClicked += async () => await HandleOpenProgram();
        this.view.OnSaveClicked += HandleSaveProgram;
        this.view.OnAddPointClicked += HandleAddPoint;
        this.tcpView.OnTCPupdateRequested += HandleTCPViewUpdate;
    }

    public void RegisterControlledRobot(RobotController robot)
    {
        this.controlledRobot = robot;
    }

    public async Task UpdateMotorStateAsync()
    {
        try
        {
            bool currentState = await model.GetRobotMotorStateAsync();

            if (currentState != lastKnownMotorState)
            {
                controlledRobot.SetMotorState(currentState);
                lastKnownMotorState = currentState;
            }
        }
        catch (Exception e)
        {
            Debug.LogWarning($"모터 상태 업데이트 실패: {e.Message}");
        }
    }

    public void OnApplicationStart()
    {
        if (controlledRobot != null)
        {
            Debug.Log("제어할 로봇이 등록되었습니다.");
        }
        else
        {
            Debug.LogError("제어할 로봇이 등록되지 않았습니다");
        }
    }


    private async Task HandleCreateProgram(string programId)
    {
        if (await model.CreateNewProgram(programId))
        {
            view.DisplayProgram(programId);
            view.HideProgramSelectPanel();
            OnApplicationStart();
        }
        else
        {
            view.ShowMessage($"Error: Program ID '{programId}.job' already exists or is invalid.");
        }
    }

    private void HandleLoadProgramList()
    {
        var programIds = model.GetAllProgramIds();
        view.ShowProgramList(programIds);
    }

    private void HandleProgramSelected(string programId)
    {
        _programId = programId;
    }

    private async Task HandleOpenProgram()
    {
        if(_programId != null && await model.LoadProgram(_programId))
        {
            view.DisplayProgram(_programId);
            view.HideProgramSelectPanel();
            view.HideProgramList();

            OnApplicationStart();

            _programId = null;
        }
    }

    private void HandleSaveProgram()
    {
        //model.SaveCurrentProgram();
    }

    private void HandleAddPoint()
    {
        //// 실제로는 UI상의 좌표나 로봇 엔드포인트 좌표를 받아와야 함
        //// 여기서는 예시로 랜덤 좌표를 사용
        //Vector3 newPoint = new Vector3(Random.Range(-1f, 1f), Random.Range(0f, 1f), Random.Range(-1f, 1f));

        //model.AddPointToCurrentProgram(newPoint);
        //view.DisplayProgram(model.CurrentProgram);
    }

    private void HandleTCPViewUpdate()
    {
        if (model.IsNewDataAvailable())
        {
            RobotData data = model.GetLatestRobotData();

            tcpView.SetCoordinates(data);
        }
    }
    private void Destroy()
    {
        this.view.OnCreateProgramClicked -= async (id) => await HandleCreateProgram(id);
        this.view.OnLoadProgramListRequested -= HandleLoadProgramList;
        this.view.OnProgramSelectedToLoad -= HandleProgramSelected;
        this.view.OnOpenProgramClicked -= async () => await HandleOpenProgram();
        this.view.OnSaveClicked -= HandleSaveProgram;
        this.view.OnAddPointClicked -= HandleAddPoint;
        this.tcpView.OnTCPupdateRequested -= HandleTCPViewUpdate;
    }
}